A-5 Plasma Chest Protector
A-5 Plasma Chest Protector
A-5 Plasma Chest Protector — guard from ALPINESTARS. Ships direct from the manufacturer (online-only).
- Chest and back protectors are mounted on a highly perforated 3D mesh for airflow and breathability
- The side wings are independent from the main semi-rigid chest protector outer shell to ensure a fully adaptive fit
- The back protector is a composite construction and has a central semi-rigid thermoplastic zone on a Nucleon Plasma back protector for greater impact force dispersion in a critical area
- Protectors have an adaptive fit that follow the body’s contours for comfort and freedom of movement
- Nucleon Plasma is a viscoelastic material engineered from bio-based polymers and formed into a structure that is pliable in all directions while maintaining the ability to dissipate impact energies
- Lightweight and ventilated, this chest protector offers strong impact force dispersion and absorption while ensuring maximum coverage area in all riding positions
- Equipped with adjustable shoulder and side straps for an optimized performance fit
- Removable soft tactile, thermoformed shoulder padding for enhanced rider comfort
SKU:27011383
Size & Fit
Size & Fit
Alpinestars Protection size guide

Alpinestars protection is sized by body measurement (not garment size). BACK protectors: by your height and waist-to-shoulder length. CHEST protectors: by your height and chest girth (separate mens and womens tables). KNEE / limb guards: by upper-leg and calf circumference. Find the section for your protector type in the chart below.
Fit: Use the section that matches your protector type. Sizes follow body measurement; some guards adjust via straps. Use as a guide only.
